Compaction device for loose materials or concrete

ABSTRACT

A compaction device for loose materials or concrete comprising a vibrator whose table is movably connected with a plate; said plate has holes through which vibrating bars are passed, said bars being rigidly fastened to the table. The use of said plate imposes a static load on the compacted layer of material, thereby preventing said layer from being loosened particularly when said bars are leaving said layer.

United States Patent [191 Freidenberg et al.

[ COMPACTION DEVICE FOR LOOSE MATERIALS OR CONCRETE [76] Inventors:Anatoly Samuilovich Freidenberg,

ulitsa Malysheva, 111, kv. 57; Igor Pavlovich Basias, ulitsa Gagarina,l2, kv. 80, both of Sverdlovsk; Vladimir Ilich Shakhlin, ulitsa Lenina,60/1, kv. 51, Magnitogorsk; Alexei Grigorlevich Trifonov, ulitsaPushkina, 30, kv. 14, Magnitogorsk; Timoiei Grigorievich Shunin, poselokDzerzhinskogo, ulitsa Dzhambula, l0, Magnitogorsk; Andrei DmitrievichFilatov, ulitsa Oktyabrskaya, l5, kv. 7, Magnitogorsk; MikhailMoiseevich Prlvalov, Bolshaya' Dekabrskaya, 3,

korpus l4, kv. 49, Moscow; Gennady Elizarovich Ovchinnikov, ulitsaKalinina, 3, kv. 85,

Magnitogorsk, all of USSR.

22 Filed: Aug. 26, 1970 21 App]. No.: 66,998

521 US. Cl. .Q ..404/116 June 26, 1973 [51] Int. Cl. E0lc 19/30 [58]Field of Search 94/48 [5 6] References Cited UNITED STATES PATENTS2,224,506 12/1940 Baily 94/48 FOREIGN PATENTS OR APPLICATIONS 441,2281/1936 Great Britain 94/48 418,882 11/1934 Great Britain 1,107,66610/1955 France 94/48 Primary Examiner-Nile C. Byers, Jr. Attorney-Holmanand Stern [57] ABSTRACT A compaction device for loose materials orconcrete comprising a vibrator whose table is movably connected with aplate; said plate has holes through which vibrating bars are passed,said bars being rigidly fastened to the table. The use of said plateimposes a static load on the compacted layer of material, therebypreventing said layer from being loosened particularly when said barsare leaving said layer.

3 Claims, 1 Drawing Figure PAIENTEDJUNZS I975 3.741.083

I llllllllll illlll| l llll! Illllllll ||1 COMPACTION DEVICE FOR LOOSEMATERIALS OR CONCRETE The present invention relates to the compactiondevices for loose materials or concrete.

Most successfully the present invention can be utilized in making highlycompact linings of furnace hearths and of the baths of heat-generatinginstallations, though it may be used equally well for compacting loosesoils in highway engineering.

At present there exist the devices for compacting loose materialscomprising a vibrator with vibrating bars located under the table ofsaid vibrator, said bars being secured rigidly to said table andcompacting the materials as the vibrator is being moved towards thecompacted layer during its vibration.

Though the vibrating bars ensure uniform compac-. tion throughout thethickness of the layer of material, they however, loosen it,particularly on the surface, when they are withdrawn from the material.

The furnace hearths made from the material compacted by vibrating barswithstand only 40 to 60 melts which results in heavy expenditures ofrefractory materials and in frequent repairs of the furnace hearths. Itis obvious that this cuts down their output to a considerable extent.

The main object of the invention resides in providing a compactiondevice for loose materials with the vibrator table improved so that saiddevice would ensure uniform compaction throughout the thickness of thelayer.

This object is accomplished by providing a compaction device for loosematerials or concrete comprising a vibrator and vibrating bars locatedunder the table of said vibrator, said bars being secured rigidly tosaid table in which, according to the invention, there is a plateconnected movably with the table and having holes through which thevibrating bars pass and whose dimensions donot interfere with theirvibration; the movable joint of the plate with the table allows them tomove freely towards each other. Such an arrangement imposes a staticload on the layer being compacted both when the vibrating bars aredipped in to this layer and when they leave it, thereby preventing thematerial, particularly the surface layer thereof, against beingloosened.

It is practicable that the movable joint of the plate and table be madein the form of bolts secured to the plate and extending through theholes in the table, said holes serving as guides for said bolts.

The proposed device usedfor compacting magnesite powders makes itpossible to obtain a volumetric weight of 2.8 2.9 g/cm of the layer, thegrain porosity beingBg/cm.

The furnace hearths made from a material compacted with the aid of theproposed device withstand 200 and more melts.

To make the invention more apparent, given below is an actual example ofits realization with reference to the accompanying drawing (whichillustrates a partly cutaway front view of the compaction deviceaccording to the invention.

The compaction device for loose materials comprises a vibrator l withvibrating bars 3 located under the table 2 of said vibrator, said barsbeing rigidly secured to said table.

. the movable joint or loss-motion connection means allows the plate tofloat, and the plate and the table to move towards each other.

The vibrator 1 is fastened to the table 2 by welded angles 8. Thevibrator 1 is placed on the surface of the compacted layer with the aidof handles 9 so that the plate 4 would fit against the surface of thelayer and the bars 3, passing through the holes 5, would enter thislayer. The plate 4 imposes a static load, thereby preventing thecompacted material from being loosened. Then the vibrator is switched onand the table 2 with the bars 3 goes slowly down under its own weightand the bars compact the layer of the material. After the bars 3 havebeen completely dipped into the material, the vibrator 1 returns to theinitial position and the bars leave the compacted layer.

At the. moment when the bars come out of the material, the plate .4prevents the surface layers of the material from being loosened. Thenthe vibrator 1 is moved to the next area of the material to be compactedand the cycle is repeated over again.

While a specific ambodiment of the invention has been disclosed in thedescription, it will be understood that various modifications andchanges within the spirit and the scope of the invention may occur tothose skilled in the art.

Weclaim 1. In a compaction device for vibrationally compacting loosematerial such as concrete, refractory material and the like comprising:table means;

vibrator means on said table means; vibrator bar means integral withsaid table means for receiving vibrations of said vibrator means throughsaid table means and consolidating material in which said bars areimmersed, said vibrator bar means having free lowerends, the improvementcomprising, in combination: reciprocable static-load plate meanssupported below and from said table means intermediately of saidvibrator bar means and forming static load transmitting surfacestherebetween, said static-load plate means including openings throughwhich said bar means project and spaced from said bar means so thatvibrations or the bar means are not transmitted thereto; and

means connecting said static-load plate means to said table means, saidtable means including lossmotion connection means for permitting saidstatic-load plate means to freely move upwardly relative to said barmeans when a static load is applied to the material being compacted andsubstantially retaining the character of the compacted surface when thevibrator bar means is withdrawn from the compacted material.

2. The structure as claimed in claim 1 in which the free ends of saidvibrator bar means are tapered a substantial distance above the freeends to substantially space the operating portions of the bar means fromthe 3 ,74 l ,08 3 1 3 4 opening of said static-load plate surfaces'between the secured to said static-load plate means and projectingvibrator bar means. through said table means for free relative movementin 3. The structure as claimed in claim 1 in which guide said tablemeans. means comprises elongated guide elements terminally

1. In a compaction device for vibrationally compacting loose materialsuch as concrete, refractory material and the like comprising: tablemeans; vibrator means on said table means; vibrator bar means integralwith said table means for receiving vibrations of said vibrator meansthrough said table means and consolidating material in which said barsare immersed, said vibrator bar means having free lower ends, theimprovement comprising, in combination: reciprocable static-load platemeans supported below and from said table means intermediately of saidvibrator bar means and forming static load transmitting surfacestherebetween, said static-load plate means including openings throughwhich said bar means project and spaced from said bar means so thatvibrations or the bar means are not transmitted thereto; and meansconnecting said static-load plate means to said table means, said tablemeans including loss-motion connection means for permitting saidstatic-load plate means to freely move upwardly relative to said barmeans when a static load is applied to the material being compacted andsubstantially retaining the character of the compacted surface when thevibrator bar means is withdrawn from the compacted material.
 2. Thestructure as claimed in claim 1 in which the free ends of said vibratorbar means are tapered a substantial distance above the free ends tosubstantially space the operating portions of the bar means from theopening of said static-load plate surfaces between the vibrator barmeans.
 3. The structure as claimed in claim 1 in which guide meanscoMprises elongated guide elements terminally secured to saidstatic-load plate means and projecting through said table means for freerelative movement in said table means.